بأر1 بَأَرَ, (S, M, K,) aor. ـَ (M, K,) He sunk, or dug, (S, M, K,) a well; (S, M;) as also ↓ ابتأر. (M, K.) b2:  Also, aor.  as above, inf. n. بَأْرٌ, He dug a [hollow such as is termed] بُؤْرَة, (Az, S, M,) in which to cook. (Az, S.) b3:  Also, (T, S, M, K,) aor.  as above, (M, K,) and so the inf. n.; (M;) and ↓ ابتأر; (T, S, M, K;) He hid, or concealed, a thing: (T, M, K:) and he stored it, or laid it up, for a time of need. (T, S, K.) Hence a hollow dug in the ground is termed بُؤْرَةٌ. (T.) b4:  You say also, خَيْرًا ↓ ابتأر, (T, M, K,) and بَأَرَهُ, (M, K,) He did good beforehand: (T, M, K:) or, accord. to some, he, as it were, did good beforehand for himself, having laid it up, or concealed it, for himself: (T, TA:) so says El-Umawee: or he laid up for himself in store concealed good: (TA:) or he did good concealedly: (M, K:) and ائتبر signifies the same. (T, TA.) 4 ابأر فُلَانًا He made, or he assigned, or appointed, (جَعَلَ,) for such a one, a well. (K.) 8 إِبْتَاَ^َ see 1, in three places.بِئْرٌ (T, S, M, &c.) and بِيرٌ, (Msb,) of the fem. gender, (S, M, Msb, K,) and ↓ بِئْرَةٌ, (M,) A well: (M, TA:) pl. (of pauc., S, Msb) أَبْؤُرٌ (S, M, Msb, K) and (by transposition, Fr, Msb) آبُرٌ (Fr, Msb, K) and أَبْآرٌ and (by transposition, Yaakoob, T, S, M) آبَارٌ and (of mult., S, Msb) بِئَارٌ; (T, S, M, Msb, K;) and pl. of pauc. [of بِيرٌ] أَبْيَارٌ. (Msb.) The dim. is ↓ بُؤَيْرَةٌ. (Msb.) بُؤْرَةٌ A hollow, or hole, dug in the ground, (Az, S, M, K,) in which to cook; also called إِرَةٌ: (Az, S:) or (M) a place in which fire is lighted. (M, K.) [See 1.]A2:  See also بَئِيرَةٌ.بِئْرةٌ: see بئْرٌ: A2:  and see بَئِيرَةٌ.بُؤَيْرَةٌ: see بِئْرٌ.بَئِيرَةٌ (T, S, M, K) and ↓ بِئْرَةٌ and ↓ بُؤْرَةٌ (M, K) A thing stored, or laid up, for a time of need. (T, S, M, K.) بَأّرٌ, (T, TA, and so in some copies of the K,) or أَبَّارٌ, (as in other copies of the K and so in the CK,) the latter formed by transposition, and the former [said to have been] not heard, (M,) A well-sinker, or well-digger. (T, M, K.)